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 Neutron number

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fearlove



Number of posts : 173
Registration date : 2011-11-06

PostSubject: Neutron number   Thu 1 Dec 2011 - 4:44

Nuclides that have the same neutron number but a different proton number are called isotones. This word was formed by replacing the p in isotope with n for neutron. Nuclides that have the same mass number are called isobars.
Chemical properties are primarily determined by proton number, which determines which chemical element the nuclide is a member of; neutron number has only a slight influence.
Neutron number is primarily of interest for nuclear properties. For example, actinides with odd neutron number are usually fissile (fissionable with slow neutrons) while actinides with even neutron number are usually not fissile (but are fissionable with fast neutrons).
Only 58 stable nuclides have odd neutron number, compared to 200 with even neutron number. No odd-neutron-number isotope is the most naturally abundant is

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